Princess Beatrice in Valentino at Kate Middleton's Wedding

There are so many words to describe the oh-so-festive fascinator worn by Princess Beatrice to the royal wedding. But, in the name of British propriety, we are compelled to refrain. Fergie's daughter certainly did not go unnoticed, wearing a truly one-of-kind abstract bow chapeau atop her otherwise chic Valentino coat.

Princess Beatrice and her wedding hat.

Princesses Eugene and Beatrice after the Royal Wedding of Prince William and Kate Middleton held at Westminster Abbey. Kate & Wills announced their engagement in November last year after William proposed during a holiday in Kenya. The Royal couple will be known after the wedding as the Duke and Duchess of Cambridge.